{"title":"Propagation dynamics and radiation force of the hollow flat-topped Gaussian beam carrying multi-vortex singularities","authors":"Jian Yu , Shandong Tong , Shuaiqi Geng , Bowen Dong , Zhe Zhang , Min Zhou , Peichao Zheng","doi":"10.1016/j.optlaseng.2024.108644","DOIUrl":null,"url":null,"abstract":"<div><div>A hollow flat-topped Gaussian beam (HFTGB) embedded multi-vortex singularities is put forward in this paper. Its propagation dynamics under the different cases of topological charge, singularity number and location are investigated by means of numerical simulation and experiment. Especially, the evolution of the HFTGB carrying different fractional topological charges is also examined. In addition, the radiation force on a Rayleigh microsphere induced the HFTGB embedded multi-vortex singularities are analyzed and discussed in detail. The results demonstrate that, combined with the advantages of multiple singularities, the HFTGBs have a higher degree of regulatory freedom for trapping or manipulating Rayleigh particles. This work will contribute to the more precise and flexible use of HFTGBs in optical manipulation, optical communication, and other application scenarios.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"184 ","pages":"Article 108644"},"PeriodicalIF":3.5000,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optics and Lasers in Engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0143816624006225","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"OPTICS","Score":null,"Total":0}
引用次数: 0
Abstract
A hollow flat-topped Gaussian beam (HFTGB) embedded multi-vortex singularities is put forward in this paper. Its propagation dynamics under the different cases of topological charge, singularity number and location are investigated by means of numerical simulation and experiment. Especially, the evolution of the HFTGB carrying different fractional topological charges is also examined. In addition, the radiation force on a Rayleigh microsphere induced the HFTGB embedded multi-vortex singularities are analyzed and discussed in detail. The results demonstrate that, combined with the advantages of multiple singularities, the HFTGBs have a higher degree of regulatory freedom for trapping or manipulating Rayleigh particles. This work will contribute to the more precise and flexible use of HFTGBs in optical manipulation, optical communication, and other application scenarios.
期刊介绍：
Optics and Lasers in Engineering aims at providing an international forum for the interchange of information on the development of optical techniques and laser technology in engineering. Emphasis is placed on contributions targeted at the practical use of methods and devices, the development and enhancement of solutions and new theoretical concepts for experimental methods.
Optics and Lasers in Engineering reflects the main areas in which optical methods are being used and developed for an engineering environment. Manuscripts should offer clear evidence of novelty and significance. Papers focusing on parameter optimization or computational issues are not suitable. Similarly, papers focussed on an application rather than the optical method fall outside the journal''s scope. The scope of the journal is defined to include the following:
-Optical Metrology-
Optical Methods for 3D visualization and virtual engineering-
Optical Techniques for Microsystems-
Imaging, Microscopy and Adaptive Optics-
Computational Imaging-
Laser methods in manufacturing-
Integrated optical and photonic sensors-
Optics and Photonics in Life Science-
Hyperspectral and spectroscopic methods-
Infrared and Terahertz techniques
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